Bladeless fan

ABSTRACT

The disclosure provides a bladeless fan, which includes a fan body and at least three telescopic brackets. The fan body includes a base. A plurality of guide members each correspondingly arranged to one telescopic bracket are installed inside the base. The guide member is fixed to the base and provided with a through channel, a bottom of the base is defined with a through hole communicated with the through channel arranged along a height direction of the base, and an inner wall of the through channel is provided with a rubber layer. The telescopic bracket includes a support and a handgrip connected with the support, and the base is provided with a guide groove arranged along the height direction of the base, the handgrip is inserted into the guide groove, the support is installed in the through channel, contacted with the rubber layer.

CROSS-REFERENCE TO RELATED APPLICATIONS

This is a U. S. patent application which claims the priority and benefit of Chinese Patent Application Number 202120149745.X, filed on Jan. 20, 2021, the disclosure of which is incorporated herein by reference in its entirety.

TECHNICAL FIELD

The disclosure relates to the technical field of fans, and in particular to a bladeless fan.

BACKGROUND ART

A bladeless fan is also called an air multiplier, because it has no blades, dust will not be covered on the blades, and it can also prevent people's fingers from being hurt. An existing bladeless fan usually can't adapt to an uneven placement surface, and it is easy to be tipped on the uneven placement surface.

SUMMARY

An object of the disclosure is to provide a bladeless fan, aiming at solving a problem that the bladeless fan is easy to be tipped on the uneven placing surface.

The disclosure is realized as follows.

A bladeless fan is provided, which includes a fan body and at least three telescopic brackets.

The fan body includes a base. A plurality of guide members are installed inside the base, each guide member is correspondingly arranged to each telescopic bracket. The guide member is fixed to the base, the guide member is provided with a through channel, a bottom of the base is defined with a through hole communicated with the through channel, the through channel is arranged along a height direction of the base, and an inner wall of the through channel is provided with a rubber layer. The telescopic bracket includes a support and a handgrip connected with the support, and the base is provided with a guide groove. The guide groove is arranged along the height direction of the base, the handgrip is inserted into the guide groove and can be moved relative to the guide groove, the support is installed in the through channel, is in contact with the rubber layer, and can relatively slide along the through channel and the through hole.

In a specific embodiment:

The bladeless fan further includes a first temperature sensor, an electric heating device, a second power supply device, a second temperature sensor and a controller.

The second power supply device is electrically connected with the electric heating device, the electric heating device is arranged in the fan body and is configured to heat wind blown out by the fan body, the first temperature sensor is in signal connection with the controller, the first temperature sensor is configured to detect an ambient temperature and transmit information on the ambient temperature to the controller, and the controller is configured to receive the information on the ambient temperature and control the second power supply device to supply or cut off power to the electric heating device according to the information on the ambient temperature, so as to control an operation state of the electric heating device.

The second temperature sensor is in signal connection with the controller. The second temperature sensor is configured to detect a temperature of the electric heating device and transmit information on the temperature of the electric heating device to the controller. The controller is configured to receive the information on the temperature of the electric heating device and control the second power supply device to supply or cut off power to the electric heating device according to the information on the temperature of the electric heating device, so as to control the operation state of the electric heating device.

In a specific embodiment:

The fan body further includes a handpiece mounted on the base, and the bladeless fan further includes a power mechanism. The base is provided with an accommodating cavity for accommodating the power mechanism, and the accommodating cavity is communicated with the handpiece. The power mechanism is mounted in the accommodating cavity, and an airflow generated by the power mechanism can be ejected through the handpiece.

In a specific embodiment, the bladeless fan further includes a trigger unit, which is provided in the fan body and electrically connected with the controller. The trigger unit is configured to detect whether the bladeless fan is operated, and the controller is configured to control an operation state of the power mechanism when the bladeless fan is operated.

In a specific embodiment:

The trigger unit includes a trigger button provided on the fan body, the trigger button is configured to detect whether the trigger button is pressed or not, and the controller is configured to control the operation state of the power mechanism when the trigger button is pressed.

In a specific embodiment, the trigger unit includes a touch element which is provided on the fan body, the touch element is configured to detect whether the touch element is touched, and the controller is configured to control the operation state of the power mechanism when the touch element is touched.

In a specific embodiment, the electric heating device is installed inside the handpiece and disposed at an air outlet of the handpiece.

In a specific embodiment, the bladeless fan further includes a prompter which is electrically connected with the controller, and the controller is configured to control an operation state of the prompter according to the operation state of the power mechanism and the operation state of the electric heating device.

In a specific embodiment, the bladeless fan is also installed with a Bluetooth module, and the Bluetooth module is in signal connection with the controller.

In a specific embodiment, the handgrip is rod-shaped, the support is rod-shaped, and an axis of the handgrip is perpendicular to an axis of the support.

The disclosure at least includes following beneficial effects.

In this bladeless fan, the base is provided with the guide groove, and when a force is applied to the handgrip, the handgrip can be moved relative to the guide groove. The base is internally provide with a plurality of guide members each provided with a through channel, moving of the handgrip drives the support to move along the through channel. Because the through channel is arranged along the height direction of the base, the support can move along the height direction of the base, the inner wall of the through channel is provided with a rubber layer, and a friction can be generated when the support slides, and only when the force is large enough can the support slides out of the through channel and the through hole, so that the support can extend out and support the base. When no force is applied, the support cannot slide relative to the guide member because of blocking of the rubber layer to the support, thus ensuring that the support does not slide freely when supporting the base after the support slides out of the through channel and the through hole, and ensuring stability of the supporting. Each telescopic bracket corresponds to one guide member, so that a telescopic height of each telescopic bracket can be independently controlled. When a placing surface of the base is uneven, the base can be stable relative to a horizontal plane by adjusting the telescopic height of each telescopic bracket, and it is not easy to be tipped on the uneven placing surface.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to illustrate technical schemes of implementations of this disclosure more clearly, the following drawings used in the implementations will be briefly introduced; it should be understood that the following drawings only show some embodiments of this disclosure, therefore they should not be regarded as a limiting of the protection scope; and other related drawings can be obtained according to these ones without creative effort for ordinary skilled in the art.

FIG. 1 is a schematic diagram of an overall structure of a bladeless fan according to an embodiment of the present disclosure;

FIG. 2 is a sectional view of the telescopic bracket and base in a first state according to an embodiment of the present disclosure;

FIG. 3 is a sectional view of the telescopic bracket and base in a second state according to an embodiment of the present disclosure;

FIG. 4 is a schematic diagram of a first functional module of the bladeless fan according to an embodiment of the present disclosure;

FIG. 5 is a schematic diagram of a second functional module of the bladeless fan according to an embodiment of the present disclosure;

FIG. 6 is a schematic diagram of a third functional module of the bladeless fan according to an embodiment of the present disclosure; and

FIG. 7 is a schematic diagram of a fourth functional module of the bladeless fan according to an embodiment of the present disclosure.

Reference Number: 10—Bladeless Fan; 100—Fan Body; 110—Base; 111—Guide Groove; 112—Through Hole; 113—Accommodating Cavity; 120—handpiece; 210—First Temperature Sensor; 220—Electric Heating Device; 230—Second Power Supply Device; 240—Second Temperature Sensor; 250—Controller; 260—Power Mechanism; 270—Trigger Unit; 280—Prompter; 281—Second Control Switch; 290—Bluetooth Module; 310—Telescopic BrackeT; 311—Support; 312—Handgrip; 320—Guide Member; 321—Through Passage; 322—Rubber Layer.

DETAILED DESCRIPTION

In order to make the purposes, technical schemes and advantages of implementations of this disclosure more clear, the technical schemes in the implementations of this disclosure will be described clearly and completely with reference to the drawings in the implementations of this disclosure; and it is obvious that the described implementations are part of the implementations of this disclosure, but not all of them.

In addition, the terms “first” and “second” are only configured for descriptive purposes and cannot be understood as indicating or implying a relative importance, or implicitly indicating a number of indicated technical features. In the present disclosure, unless otherwise specified and limited, terms “installation”, “connection”, “installation” and other terms should be broadly understood.

Embodiments

This embodiment provides a bladeless fan 10. Reference is made to FIG. 1, which shows a schematic diagram of an overall structure of the bladeless fan 10.

The bladeless fan 10 includes a fan body 100, a power mechanism 260, a first temperature sensor 210, an electric heating device 220, a second power supply device 230, a second temperature sensor 240, a controller 250 and at least three telescopic brackets 310. The fan body 100 includes a base 110 and a handpiece 120 installed on the base 110. The base 110 is provided with an accommodating cavity 113, and the power mechanism 260 is installed in the accommodating cavity 113. The handpiece 120 is annular with blowing channels therein, and blowing ports are opened along a circumferential direction of the handpiece 120. An air flow generated by the power mechanism 260 flows through the blowing channels to blow out of the blowing ports to form an annular air flow.

In addition, referring to FIG. 2 and FIG. 3, a plurality of guide members 320 are installed inside the base 110, that is, the guide members 320 are all installed in the accommodating cavities 113, and the guide members 320 are fixed in the receiving cavities 113 in the base 110. In this embodiment, there are at least three telescopic brackets 310 provided, and a number of guide members 320 is the same as that of the telescopic brackets 310, and each of the guide members 320 is correspondingly arranged to each of the telescopic brackets 310.

The guide member 320 is defined with a through channel 321, a bottom of the base 110 is provided with a through hole 112 communicating with the through channel 321. The through channel 321 is arranged along a height direction of the base 110, an inner wall of the through channel 321 is provided with a rubber layer 322. The telescopic bracket 310 includes a support member 311 and a handgrip 312 connected with the support member 311, and the base 110 is provided with a guide groove 111. The guide groove 111 is arranged along the height direction of the base 110, the handgrip 312 is inserted into the guide groove 111 and can be moved relative to the guide groove 111, the support 311 is installed in the through channel 321, and the support 311 can relatively slide along the through channel 321 and the through hole 112, and the support 311 is in contact with the rubber layer 322.

When a force is applied to the handgrip 312, the handgrip 312 can be moved relative to the guide groove 111, that is to say, the handgrip 312 moves along the height direction of the base 110, and moving of the handgrip 312 drives the support member 311 to move along the through channel 321. Since the through channel 321 is also arranged along the height direction of the base 110, the support member 311 can also move along the height direction of the base 110. In this embodiment, the handgrip 312 is rod-shaped, the support 311 is rod-shaped, and an axis of the handgrip 312 is perpendicular to an axis of the support 311. This arrangement makes it more convenient to apply a force to the handgrip 312.

Because the rubber layer 322 is arranged on the inner wall of the through channel 321, and a friction can be generated when the support 311 slides, and only when the force is large enough can the support 311 slides out of the through channel 321 and the through hole 112, so that the support 311 can extend out and support the base 110. When no force is applied, the support 311 cannot slide relative to the guide member 320 because of elasticity of the rubber layer 322 and its blocking to the support 311, thus ensuring that the support 311 does not slide freely when supporting the base 110 after the support 311 slides out of the through channel 321 and the through hole 112, and ensuring stability of the supporting.

Each telescopic bracket 310 corresponds to one guide member 320, so that a telescopic height of each telescopic bracket 310 can be independently controlled. When a placing surface of the base 110 is uneven, the base 110 can be stable relative to a horizontal plane by adjusting the telescopic height of each telescopic bracket 310. In addition, when the telescopic bracket 310 supports the base 110, it is also beneficial for the base 110 of the bladeless fan 10 to dissipate heat. In addition, there are at least three telescopic brackets 310 in this embodiment, for example, three, four or five, etc.

In this embodiment, the power mechanism 260 includes an electric motor and a first power supply device electrically connected with the electric motor. The electric motor sucks air into the base 110 and encircles it in the handpiece 120. An encircling force of the electric motor drives the air near the handpiece 120 to enter the handpiece 120 and injects it out through an air outlet at a high speed. The second power supply device 230 is electrically connected with the electric heating device 220, which is arranged in the fan body 100 and configured for heating wind blown by the fan body 100. In this embodiment, the electric heating device 220 is arranged inside the handpiece 120 and located at the air outlet of the handpiece 120, so the wind blown out through the air outlet can be heated by the electric heating device 220 and then become hot air blowed.

The first temperature sensor 210 is in signal connection with the controller 250. The first temperature sensor 210 is configured for detecting an ambient temperature and transmitting information on the ambient temperature to the controller 250. The controller 250 is configured for receiving the information on the ambient temperature and controlling the second power supply device 230 to supply or cut off power to the electric heating device 220 according to the information on the ambient temperature, thereby controlling an operation state of the electric heating device 220. The controller 250 can be chosen to be a PC or PLC programming controller.

Referring to FIG. 2, in this embodiment, the first temperature sensor 210 detects an external temperature and transmits the information on the ambient temperature to the controller 250. The controller 250 receives the information on the ambient temperature and determines whether it is lower than a preset value. If it is lower than the preset value, the controller 250 controls the second power supply device 230 to supply power to the electric heating device 220, which heats the air in an air blowing channel and blows hot air out of the air outlet. If the controller 250 determines that the ambient temperature is higher than the preset value, the controller 250 controls the second power supply device 230 to cut off the power and not to supply the power to the electric heating device 220, so that the air blown out of the air outlet is at a normal temperature and has not been heated.

The second temperature sensor 240 is in signal connection with the controller 250. The second temperature sensor 240 is configured for detecting a temperature of the electric heating device 220 and transmitting information on the temperature of the electric heating device 220 to the controller 250. The controller 250 is configured for receiving the information on the temperature of the electric heating device 220 and controlling the second power supply device 230 to supply or cut off power to the electric heating device 220 according to the information on the temperature of the electric heating device 220, thereby controlling the operation state of the electric heating device 220.

If it is in a hot air mode for a long time, that is, the electric heating device 220 is in the operation state for a long time, the electric heating device 220 may be overheated, and the electric heating device 220 transfers heat to a casing of the fan body 100 inside the fan body 100, thus causing the casing of the bladeless fan 10 to be overheated.

The second temperature sensor 240 can detect the temperature of the electric heating device 220 and transmit the temperature to the controller 250. The controller 250 receives the information on the temperature and determines whether the temperature exceeds the preset value. If it exceeds the preset value, the controller 250 controls the second power supply device 230 to cut off the power to the electric heating device 220, thus avoiding the overheating of the casing of the bladeless fan 10. If the preset value is not exceeded, the second power supply device 230 is kept to supply the power to the electric heating device.

Further, referring to FIG. 3, in this embodiment, the bladeless fan 10 further includes a trigger unit 270, which is arranged in the fan body 100 and electrically connected with the controller 250. The trigger unit 270 is configured to detect whether the bladeless fan 10 is operated, and the controller 250 is configured to control an operation state of the power mechanism 260 when the bladeless fan 10 is operated.

When the trigger unit 270 is operated, the controller 250 controls the operation state of the power mechanism 260. Specifically, the controller 250 controls the operation state of the power mechanism 260 by controlling the first power supply device to supply or cut off the power to the electric motor. Specifically, the trigger unit 270 of this embodiment can be a trigger button or a touch element. The trigger button has a pressure element, the touch button is installed on the fan body 100, the pressure element in the touch button can detect whether the trigger button is pressed or not, and the controller 250 is configured to control the operation state of the power mechanism when the trigger button is pressed. The touch element can be a capacitive sensor, and the touch element is arranged on the fan body and is configured to detect whether the touch element is touched, and the controller 250 is configured to control the operation state of the power mechanism when the touch element is touched.

Optionally, a Bluetooth module 290 can be installed in the bladeless fan 10, and the Bluetooth module 290 is in signal connection with the controller 250. Referring to FIG. 4, the Bluetooth module 290 can be in signal connection with a mobile phone APP, so that the controller 250 can be instructed to control an operation state of the fan through the mobile phone APP, for example, to control the blowing and air volume of the bladeless fan 10.

Further, in order to conveniently know whether the bladeless fan 10 is blowing hot air, the bladeless fan 10 of this embodiment further includes a prompter 280 electrically connected with the controller 250, and the controller 250 is configured to control the operation state of the prompter 280 according to the operation state of the power mechanism 260 and the operation state of the electric heating device 220. The operation state of the electric heating device 220 is determined by whether the second power supply device 230 supplies the power to the electric heating device 220.

That is, if the power mechanism 260 and the electric heating device 220 operate together, it indicates that it is blowing the hot air, and if the power mechanism 260 operates alone and the electric heating device 220 does not operate, it indicates that it is blowing normal air.

Referring to FIG. 5, a second control switch 281 can also be installed on the prompter 280 electrically connected with the second control switch 281, and the second control switch 281 is electrically connected with the controller 250. When both the power mechanism 260 and the electric heating device 220 are not in operation, the controller 250 controls the second control switch 281 to turn off, and when the power mechanism 260 is in operation, the controller 250 controls the second control switch 281 to turn on, so that the prompter 280 can emit sound or light.

The above is only specific implementations of the present disclosure, and is not intended to limit this disclosure, and modifications and variations can be made in this disclosure for those skilled in the art. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of this disclosure shall be encompassed within the protection scope of this disclosure. 

What is claimed is:
 1. A bladeless fan, comprising a fan body and at least three telescopic brackets, wherein the fan body comprises a base, a plurality of guide members are installed inside the base, each guide member is correspondingly arranged to each telescopic bracket, the guide member is fixed to the base, the guide member is provided with a through channel, a bottom of the base is defined with a through hole communicated with the through channel, the through channel is arranged along a height direction of the base, and an inner wall of the through channel is provided with a rubber layer, the telescopic bracket comprises a support and a handgrip connected with the support, and the base is provided with a guide groove, the guide groove is arranged along the height direction of the base, the handgrip is inserted into the guide groove and is moved relative to the guide groove, the support is installed in the through channel, is in contact with the rubber layer, and relatively slides along the through channel and the through hole.
 2. The bladeless fan according to claim 1, further comprising a first temperature sensor, an electric heating device, a second power supply device, a second temperature sensor and a controller; wherein the second power supply device is electrically connected with the electric heating device, the electric heating device is arranged in the fan body and is configured to heat wind blown out by the fan body, the first temperature sensor is in signal connection with the controller, the first temperature sensor is configured to detect an ambient temperature and transmit information on the ambient temperature to the controller, and the controller is configured to receive the information on the ambient temperature and control the second power supply device to supply or cut off power to the electric heating device according to the information on the ambient temperature, so as to control an operation state of the electric heating device; and the second temperature sensor is in signal connection with the controller, the second temperature sensor is configured to detect a temperature of the electric heating device and transmit information on the temperature of the electric heating device to the controller, the controller is configured to receive the information on the temperature of the electric heating device and control the second power supply device to supply or cut off power to the electric heating device according to the information on the temperature of the electric heating device, so as to control the operation state of the electric heating device.
 3. The bladeless fan according to claim 2, further comprising a handpiece mounted on the base and further comprising a power mechanism, wherein the base is provided with an accommodating cavity for accommodating the power mechanism, and the accommodating cavity is communicated with the handpiece, the power mechanism is mounted in the accommodating cavity, and an airflow generated by the power mechanism is ejected through the handpiece.
 4. The bladeless fan according to claim 3, further comprising a trigger unit which is provided in the fan body and electrically connected with the controller, wherein the trigger unit is configured to detect whether the bladeless fan is operated, and the controller is configured to control an operation state of the power mechanism when the bladeless fan is operated.
 5. The bladeless fan according to claim 4, wherein the trigger unit comprises a trigger button provided on the fan body, the trigger button being configured to detect whether the trigger button is pressed or not, and the controller being configured to control the operation state of the power mechanism when the trigger button is pressed.
 6. The bladeless fan according to claim 4, wherein the trigger unit comprises a touch element which is provided on the fan body, the touch element being configured to detect whether the touch element is touched, and the controller being configured to control the operation state of the power mechanism when the touch element is touched.
 7. The bladeless fan according to claim 3, wherein the electric heating device is installed inside the handpiece and disposed at an air outlet of the handpiece.
 8. The bladeless fan according to claim 3, further comprising a prompter which is electrically connected with the controller, the controller being configured to control an operation state of the prompter according to the operation state of the power mechanism and the operation state of the electric heating device.
 9. The bladeless fan according to claim 2, wherein the bladeless fan is further equipped with a Bluetooth module, the Bluetooth module being in signal connection with the controller.
 10. The bladeless fan according to claim 1, wherein the handgrip is rod-shaped, the support part is rod-shaped, and an axis of the handgrip is perpendicular to an axis of the support part. 